Method for UV (Ultra-Violet Ray) lustering of offset press through hollowing lining papers
A backing paper and offset printing machine technology, applied to printing machines, printing, general parts of printing machinery, etc., can solve the problems of low work efficiency, high production cost, and low durability of blankets, and achieve convenient and fast manufacturing. Low cost, the effect of reducing printing costs
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Embodiment 1
[0021] A method for UV varnishing of an offset press by hollowing out liner paper, comprising the steps of:
[0022] Step 1: Select 3 sheets of padding paper with a width of 800mm and a length of 1100mm, and the thickness of each padding paper is 0.3mm.
[0023] Step 2: cutting off the area of the liner paper corresponding to the non-image part of the printed matter to form a hollow, leaving the printed area.
[0024] Step 3: According to the specifications and thickness of the printed paper, adjust the pressure of the ink roller between each printing group, and install the color sequence printing plate.
[0025] Step 4: Place the cut liner paper on the printing area on the blanket correspondingly, and then install the liner paper together with the blanket on the blanket cylinder and fix and lock them.
[0026] Step 5: Select the anilox roller, after adjusting the printing pressure, start the varnish pump to pump the UV varnish into the varnish chamber.
[0027] Step 6: Ad...
Embodiment 2
[0030] The main difference between this embodiment and Embodiment 1 is that: 6 sheets of liner paper with a width of 750 mm and a length of 1000 mm are selected, and the thickness of each liner paper is 0.1 mm.
Embodiment 3
[0032] The main difference between this embodiment and Example 1 is that in the step 1, four sheets of liner paper with a width of 787 mm and a length of 1092 mm are selected, and the thickness of each liner paper is 0.2 mm. for the best implementation.
[0033] According to the thickness of the printed paper and the range value of the printing pressure specified by the equipment, choose the liner paper that can withstand the printing pressure range close to this, to avoid the dot expansion caused by too high pressure, and the imprint will be blurred and printed inaccurately if the pressure is too small. Affect the quality of printed products; indirect printing is carried out under the action of printing pressure between the printing plate cylinder, the rubber cylinder and the impression cylinder, and the cushion paper is placed under the blanket, because the required value of the blanket for the cushion paper must be controlled within Within the error range of 0.015mm, if the...
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